class Student{
    private static String classRoom;
    //静态代码块
    static {
    classRoom = "bit306";
    System.out.println("I am static init()!");
    }
    //构造方法
    public Student(){
        System.out.println("I am Student init()!");
    }
    public static void main(String[] args) {
        Student s1 = new Student();
        Student s2 = new Student();
    }
}